It's only fan speculation and assumption that she's revisiting The Fame. Even if she touches on similar ideas, I doubt she'll repeat herself. She probably won't need to considering there's a wealth of material left to explore.
I doubt she'll ever 100% draw a line under it all, anyway. Warholian philosophies on Fame, pop culture and iconography clearly fascinate her and are at the root of what "Lady Gaga" is. She was even writing essays about this in school.